keyless entry systems are a typical application for this coil, the isotropy is often sought in rf antenna. in transponder applications, this feature has been achieved by the combination of 3 single coils oriented in the 3 space axis. the new 3d coil from zsucore rfid offers the possibility of mounting a single component instead of three, thus reducing cost, saving pcb space and increasing the circuit reliability. sensitivity, low profile and small size are the key of this rfid innovative component. best choice for keyless entry systems the three tri-rectangular windings ensure optimum field sensing regardless position. size: 17.5 x 16 x 4mm high drop test resistance (up to 500 times 1 m) due to a maximized pin area. high stability in temperature (-40oc to +125oc). isotropic version available. with cover cap or labelled. taped & reeled. designed for 125khz and 134khz. applications: automotive passive keyless entry systems. automotive tpms with wake up functions. access control. tracking devices. the specification chart is a reference guide for the most common required values at working frequencies of 125 khz. any other inductance value at lf or tighter tolerances can be provided. please contact our sales deparment for any inquiry.